Simplefit.orgBodyweight Exercises, Body weight workouts2011-10-06T00:41:42-08:00http://www.simplefit.org/phpbb/feed.php?f=3&t=18832011-10-06T00:41:42-08:002011-10-06T00:41:42-08:00http://www.simplefit.org/phpbb/viewtopic.php?t=1883&p=15993#p15993I would like to see a simplefit app that would let you challenge your friends to a simplefit workout and then show the results and also track your progress against a group of friends?